\begin{tikzpicture}[scale=0.4]
    \pgfmathsetmacro{\be}{2}
    \pgfmathsetmacro{\df}{3}
    % 角 1 = 60 度， 角 C = 120 度， 角 B = 角 D = 60 度，角 BAE = 角 FAD = 30 度
    \pgfmathsetmacro{\ab}{2 * \be} % 30 度角所对边为斜边一半
    \pgfmathsetmacro{\ad}{2 * \df}

    \tkzDefPoints{0/0/B, \ad/0/C}
    \tkzDefPoint(60:\ab){A}
    \tkzDefShiftPoint[C](60:\ab){D}

    \tkzDefPointBy[projection= onto B--C](A)  \tkzGetPoint{E}
    \tkzDefPointBy[projection= onto C--D](A)  \tkzGetPoint{F}
    \tkzDrawPolygon(A,B,C,D)
    \tkzDrawSegments(A,E  A,F)
    \tkzMarkRightAngle[size=.5](A,E,B)
    \tkzMarkRightAngle[size=.5](A,F,D)
    \tkzMarkAngle[size=0.8](E,A,F)
    \tkzLabelAngle[pos=1.5](E,A,F){$1$}
    \tkzLabelPoints[left](A,B)
    \tkzLabelPoints[right](C,D)
    \tkzLabelPoints[below](E)
    \tkzLabelPoints[right](F)
\end{tikzpicture}

